A new species of Speleoithona and two new species of Halicyclops are d
escribed from plankton samples taken in anchialine caves in Bermuda. H
alicyclops ytororoma, previously known from interstitial intertidal wa
ters along the coast of the State of Sao Paulo, Brazil, is also found
in these troglobiont samples. Speleoithona is redefined to contain the
new species from Bermuda.